I and several users have already explained this here, several times and even a person from the forum put several screenshots, but in my view this bug is not solved with route implementations, it is really a grodesque bug the plane was landing automatically and when i noticed that it was decentralized i used the automatic copilot in it the plane went up and down to land before the runway.
Won't you mind Sir to Upload here some more Screenshots from the "Tail-View-Camera" or some other camera angles..(I mean can you post a Screenshot where we can see the Runway along with the Aircraft with the problem you mentioned)
Problem that you demonstrated needs to first visually examined so as we can all come to a Conclusion about what is actually causing the problem- "Is it a Physical Error?" Or "Machine-(Programming)-Error?"
For me, I am unable to reproduce the problem in Aerofly.. I tried but the way you mentioned the Problem.... "I am not getting that".... So, Sir if you can Upload some more Screenshots then "Community Members", "Administrators" can help...